TANYMECUS. 179. 
TANYMECUS. 
Tanymecus, Schonherr, Cure. Disp. Meth. p. 127 (1826) ; Gen. Cure. ii. p. 75 ; Lacordaire, Gen. 
Col. vi. p. 96; Horn, Proc. Am. Phil. Soc. xv. p. 83. 
A genus including a large number of species, very few of which are from the New 
World; one, however, is abundant in the United States and Central America. ‘hese 
American forms all have well-developed setiform vibrisse. 
1. Tanymecus confertus. (Tab. VII. figg. 20, 20a, 3.) 
Tanymecus confertus, Gyll. in Schénh. Gen. Cure. ii. p. 88°; vi. 1, p. 2417; Hora, Proc. Am. 
Phil. Soc. xv. p. 84°; Pierce, Proc. U.S. Nat. Mus. xxxvii. p. 358 *. 
Tanymecus confusus, Say, Descr. N. Am. Cure. p. 9°; Complete Writings, i. p. 269°. 
Tanymecus variabilis, Fahr. in Schénh. Gen. Cure. vi. 1, p. 2417. 
Polydacris tristis, in coll. Sturm 8. 
Hab. Nortu America! 45 6, everywhere east of the Rocky Mountains 3.—Mexico 278; 
British Honpuras ; Guatemata; NIcaRAGva. 
An abundant insect in Central America, apparently not extending south of 
Nicaragua, examples from our region not differing from others before me from Texas, 
&c. Specimens from Paso del Norte are larger, more densely punctate, and more closely 
squamose than the rest; Dr. Horn®, too, also notes larger individuals from the 
Southern United States. The wings are usually in a rudimentary condition, but 
occasionally become fully developed, even amongst a series examined from the same 
localities (Teapa and Rio Hondo). The rostral carina is rarely obsolete. The humeri 
are obliquely truncated. The first ventral segment is hollowed down the middle in 
the male, the fifth is without trace of oblique lines at the base in the female. The 
length varies from 5-82 millim. A male from Nicaragua is figured. The insect has 
been found on Ginothera in Texas‘. 
2. Tanymecus hirsutus, sp. n. (Tab. VII. figg. 21, 21a, 3.) 
3. Elongate, narrow, black, the antenne and tips of the tarsi obscure ferruginous; somewhat thickly 
clothed with small cinereous seales intermixed with numerous short suberect pallid sete, the sete on the 
elytra closely placed and arranged in two or three rows along each interstice. Head and rostrum 
densely punctate, the rostrum transversely subquadrate, slightly emarginate at the tip, and with an 
abbreviated median sulcus; eyes prominent. Prothorax about as long as broad, rounded at the sides, a 
little narrower at the apex than at the base, densely, uniformly punctate. Elytra elongate, wider than 
the prothorax, slightly hollowed at the base, the humeri obtuse ; coarsely punctate-striate, the interstices 
almost flat and closely punctulate. First ventral segment broadly hollowed down the middle, and the 
fifth obsoletely sulcate towards the apex. All the tibie distinctly unguiculate at the inner apical angle. 
Length 63-71, breadth 2-22 millim. 
Hab. Mrxico, Guanajuato (Sallé), Obrajuelo (Flohr). 
Two males, one worn. Narrower than 7. confertus; the rostrum uot carinate, but 
with a short median groove; the elytra connate, closely set with short, semierect, 
brownish sete, the scales scattered and not condensed into definite markings, the 
humeri not obliquely truncated. 
Z2AA2 
