424 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxvii. 



Pronotum with a vow of about twelve bristles on the posterior third, 

 and on the hind marc^in a ctenidiuni of about twenty stout spines. 

 Meso- and metanotum each with a row of ten or twelve larger bristles 

 and a second row of more numerous smaller ones. Meta thoracic 

 epiphysis with a single bristle on the hind margin, and anterior to this 

 two rows of three bristles each. The middle abdominal tergites each 

 have a transverse row of fourteen larger bristles, and a second row of 

 more numerous smaller ones. First abdominal tergite with three 

 small teeth on either side of hind margin, second, third, and fourth 

 each with two on either side, and tifth and sixth each with one. 

 Antepygidial bristles badly l)roken in this specimen, but there are 

 apparently only two on either side. The abdominal sternites each 

 have a single row of from four to six large bristles. 



The end of the alidomen is rather heavily clothed with bristles. 

 The style is about three times as long as wide at base, nearly cylin- 

 drical, and with a long liristle at apex. The substylar ilap has a thick 

 brush of hairs on the lower margin. 



The hind coxje have a group of numerous small, short, somewhat 

 thickened bristles on the inside, which resemble the grouped teeth 

 occurring here in some Pule.r and ({ratophyUu.s. Hind femur with a 

 single small bristle on side near l)ase. The spines on hind legs are 

 unusually long. The first joint of the hind tarsi has five groups of 

 spines on either margin; the last joint with ])ut eight heavy spines, 

 four on either margin. Hind tarsi mutilated in this specimen, but 

 lengths of middle tarsal joints in the proportion 12-11-7-5-12. 



Length, 2.25 mm. Color, pale brown. 



CTENOPHTHALMUS GENALIS, new species. 



A species collected on Geoniys hurKarius at the Agricultural College 

 of Michigan, and formerly supposed to ))e a variety of fraterna^ is 

 now considered wholly distinct and described herewith from a single 

 male. 



Head somewhat flattened above. Rows of genal bristles pushed high 

 up on head. The insertions of the five irregular ctenidial spines occupy 

 half the surface of the genje. These ctenidial spines are ver}^ dissim- 

 ilar, the middle three longer, the upper distinctly spatulate, and the 

 next one slighth^ so. The bristles on the second antennal joint are far 

 shorter than the third joint. The antennal groove reaches the upper 

 margin of the head, and its hind margin is without minute bristles or 

 hairs. The upper row on either side of vertex has about four bristles, 

 the second row about six. The hind margin of the head has the usual 

 bristles. The labial palpi are slender and equal three-fourths of ante- 

 rior coxa?. The maxillary palpi are unusually short and thick. 



Pronotum with a row of about twelve bristles on posterior third, and 

 on hind margin a ctenidium of about twenty-eight slender spines. 



