492 



FA MILY XIII. — SCAPH IDIID^ . 



hi). Elytra black without spots. 942a. var. piceum. 



aa, Elytra without coarse discal punctures, each usually with two marginal 

 spots of pale yellow. 942b. var. obliteratum. 



*942 (2975). Scaphidium quadriguttatum Say, Journ. Phil. Acad. Nat. 

 Sci., III, 1823. 198; ibid. II, 126. 

 Oval, convex, glabrous. Black, strongly shining; elytra with spots as 

 mentioned in key. Thorax with a bisinuate row of coarse punctures near 

 the base. Elytra with a row of similar punctures on inner half of base 

 and two to four short rows before the middle and nearer the suture than 

 the sides. Length 3.8-4.5 mm. 



Frequent throughout the State. February 23- November 8. 



*942a (2975c). Scaphidium quadriguttatum piceum 

 Melsh.. Proc. Phil. Acad. Nat. Sci., 

 II, 1844, 103. 



A color variety of quadriguttatum which is wholly 

 shining black above. It is found associated with that 

 species and in winter is even more frequent, being found 

 especially beneath the bark of old, fungus-covered beech 

 logs. (Pig. 174.) 



Throughout the State. January 24-December 25. 

 Casey's amplum, described from Indiana, is evi- 

 Fi g . 174. x 6. (Original.) dently based on an immature piceum. 



942b (2975a). Scaphidium quadriguttatum obliteratum Lee, Proc. Phil. 

 Acad. Nat. Sci.. 1860, 322. 

 The absence of coarse punctures on the disk of elytra and the small 

 size of the elytral spots are the only characters given by LeConte and Casey 

 to distinguish this form from quadriguttatum. 



In my collection are several specimens taken in Vigo County, 

 which have the elytra wholly devoid of discal punctures and yet, 

 like piceum, are entirely black. I have not seen the spotted form 

 from the State, but the type of LeConte came from near Evansville, 

 Indiana. In all probability Horn was right in regarding both 

 piceum and obliteratum as varieties, * Casey to the contrary not- 

 withstanding.* * 



Cyparium flavipes Lee, chestnut-brown, legs and antennas paler, 

 length 3.5 mm., is a southern form which Dury records from Cin- 

 cinnati. 



II. B^ocera Erichs. 1845. (Gr., " small + horn.") 



Small black or piceous species, having the third joint of an- 

 tennas slender and cylindrical, the outer three joints somewhat 



*Trans. Amer. Ent. Soc, V, 1875, 132. 

 **. Journ. N. Y. Ent. Soc, VIII, 1900, 55. 



