lOU THOS. L. CASEY. ^ 



Sub-Family IV.— HEMIPEPLINAE. 

 This sub-family contains but one genus. 



IIEMIPEPIiUS Latr. 



MentiiJii transverse, feebly emarginate : ligula long, coriaceous and bilobed; 

 lobes rounded and ciliated. External lobe of maxillae depressed, sub-oval, arcuate 

 and slightly ciliated at the tip ; internal lobe smaller, truncated and slightly cili- 

 ated at the extremity. Labial palpi very small, last joint depressed and truncated 

 at the tip; maxillary palpi with the last joint securiform. Mandibles short, arcu- 

 ate and acute. Labrum sub-quadrate, transverse, sinuate anteriorly Head sub- 

 quadrate, broadest at the eyes, front squarely truncated. Eyes moderate or large, 

 convex and prominent ; antennae inserted at the extremities of the frontal trun- 

 cation : sides of prothorax sinuate; scutellum moderate. Elytra greatly elongated, 

 not covering entire abdomen. Legs shorty, femora oval, very compressed ; tibiae 

 almost straight. Tarsi heteromerous in both sexes, first four joints bilobed. Body 

 extremely elongated and depressed. 



We have two species, distinguished as follows : 



Eyes large; sides of prothorax entire 1. tnarginipenilis. 



Eves small : sides of prothorax very slightly undulated. 



2. microphthalnniis. 



1. H. marginipennis Lee. — Form extremely elonarated and depressed. 

 Punctures of head rather coarse, irregular and sometimes confluent; those of pro- 

 thorax much finer, and so confluent as to present simply a roughened appearance. 

 Elytra not punctured. Body pale yellowish testaceous. Head sub-quadrate. 

 Eyes very large, convex and prominent. Tarsi b — 5 — 4 in both sexes. 



Male. — Prothorax as wide as head across the eyes; sides sinuate, a deep punc- 

 ture near each posterior angle. Elytra about two and three-fourtlas times the 

 lengtli of head and prothorax together, margined, obscurely striate, and with a 

 coarse cellular texture; squarely truncate behind, and leaving almost the entire 

 fifth ventral segment exposed. Body above entirely glabrous, with the exception 

 of the exposed abdomen ; below pubescent: fifth ventral segment longer than the 

 fourth. Tibiae terminated by two stout, black spurs; first joint of posterior tarsi 

 equal in length to last, but much larger and more robust, otherwise as in female. 

 Antennae equal in length to head and prothorax together: first joint much elon- 

 gated, second small, the remainder gradually increasing in size. Terminal pro- 

 cess of last joint very well developed; all densely and very finely pubescent. 

 Length S.O mm. 



Female. — Protliorax narrower than head, length equal to breadth, front sinuate; 

 a deep puncture near each posterior angle, the latter prominent, anterior angles 

 rounded ; sides sinuate. Elytra nearly three times the length of the head and 

 prothorax together, broader than the head, rather squarely truncated behind, and 

 leaving the tip of the last ventral segment exposed. Tibiae terminated by two 

 short, stout, black spurs; first joint of posterior tarsi much the longest and largest, 

 first 4 — 4 — 3 joints bilobed, large and densely pubescent beneath ; terminal joints 

 slender; upper surface of body covered densely with short setae. Abdominal seg- 

 ments equal : elytra not punctured, and not striate, feebly margined. Antennae 

 somewhat longer than head and prothorax together; first joint short and very 



