DESCKIPTION OF GENERA AND SPECIES. 201 



by shoulder humps, presents a triangular folium that covers the entire surface, being ordi- 

 narily a bright yellow, with beautiful rose-colored or red reticulations. On some of the 

 specimens a brownish line, with curved side branches, passes along the median; the front 

 overhangs the cephalothorax, is rounded, brown, mottled with yellow, showing often rosy 

 hues. The side (Fig. Ca) in some specimens is very beautiful, a reticulated yellow, with 

 stripes of vermilion or lake. The dorsum terminates in a rounded cone, and just under- 

 neath this on the apical wall is a second rounded tubercle, and beneath this a third, 

 rather flattened; on either side of this median row are two similar rounded tubercles; the 

 sides in some specimens are roughened or indented ; the whole surface of the skin is 

 glossy, and is covered rather scantily with long whitish yellow hairs. The venter is a 

 blackish brown patch, which encompasses the spinnerets, which are black and much over- 

 hung by the abdomen ; the epigynum (Fig. 6c) has a long needlelike scapus, glossy brown 

 in color, narrow at the base, pointed at the tip, which extends from the narrow atriolum 

 entirely to the spinnerets; the portuke show on either side as compressed openings into 

 the genital cleft. 



Male: 6 mm. long; cephalothorax yellowish brown, foce much projecting beyond the 

 mandibles, which are decidedly weaker than in the female, retreating backward and widely 

 divergent at the tips ; legs yellow, with lighter brown annuli ; provided with numerous long 

 yellow spines, especially formidable underneath femora-I, II; tibia-II is curved, and pro- 

 vided at the apex with a most remarkable series of clasping spines, one of which is a 

 strong, long spur, thick at the base, which is covered with curved bristles, pointed at the 

 tip into two dark pointed spines, one longer than the other; beyond this spur on either 

 side is a low process which contains two shortened curved brown spines; the apex itself is 

 much thickened, and has one strong curved brown spine ; besides these are a number of 

 long acute brownish spines. The abdomen is triangular ovate, and has the characteristic 

 markings and tubercles of the female, but less decidedly. The palps (Fig. 7a) are brownish 

 yellow in color; the digit an elongated oval, the cubital joint much curved, longer than the 

 radial joint, which is quite short. 



Distribution : I have collected this species in the neighborhood of Philadelphia, wliere, 

 however, it is not common; in New Jersey and Ohio; and have it from as far west as the 

 American Plains. Abbot took it in Georgia, Hentz in Alabama and North Carolina. Marx 

 reports it from Florida (Cresson City), Utah (Spring Lake), California (Occidental). The 

 species is thus widely distributed over the United States. I have specimens collected by 

 the late Mr. W. H. Gabb from San Domingo varying in but slight particulars from those 

 above described. The species is doubtless well distributed throughout the West Indies; 

 and the States of Central and South America contain species closely resembling it. 



No. 57. Verrucosa unistriata, new species. Plate V, Figs. 3, 3a-c. 



Female: Body length, 11 mm.; abdomen, 9 mm. long, 7 mm. wide; cephalothorax, 

 5 mm. long, 5 mm. wide. The general colors are, for the fore part of the body yellow, 

 with orange or rose tints on the legs, and for the abdomen grayish yellow, with a prom- 

 inent median band of a bright yellow or yellowish white. 



Cephalothorax: A rounded oval, the corselet margin almost circular; color yellowish 

 brown, with a dark or median band of brown, which passes through two large patches of 

 brown, apparently on a depressed spot in the centre of the caput. The head more than 

 half as wide as the corselet, sloping gradually to the face; moderately pubescent, with 

 long, gray, bristlelike hairs scattered over the surface; corselet grooves distinct; cephalic 

 suture well marked. Sternum little longer than wide, attenuated at the apex, raised in the 

 middle, with prominent sternal cones, especially before coxa-III and in front of the 

 labium; color dark brown, with a yellowish brown median patch. Labium obtusely tri- 

 angular, thickened at the base, more than half as long as the maxillse ; maxilla? longer 

 than broad, subtriangular at the tip, and tipped with yellowish white. 



Eyes: Ocular quad elevated, a little wider in front than rear, the length greater than 

 width; MF separated about 1.5 to 2 diaiuetei-s; MR smaller than MF, and separated one 



