AMERICAN COLEOPTERA. 115 



black, ferruginous at base, serrate, longer than half the body. Thorax slightly- 

 broader than long and somewhat narrower in front, surface smooth shining, 

 sides broadly margined with rufous. Elytra slightly broader behind, shining, 

 surface punctulate and slightly wrinkled, color black with slight tinge of blue, 

 lateral margin, apex and suture (except at base) margined with reddish-yellow. 

 Legs black, femora and coxae yellow. Length .16 inch ; 4 mm. 



Male. — Body beneath entirely yellow, sides of metasternum brown. Ab- 

 dominal segments entire, the last three with reniform excavations deeper in 

 the terminal which has also within the excavation a cup-like process. Second 

 anterior tarsal joint prolonged slightly over the third. 



Female. — Body beneath black, abdomen yellow. Abdominal segments, ex- 

 cept the last two, interrupted at middle, terminal segment black. 



Occurs in various parts of southern California. 



T. longiceps, Lee. (Malachius) Proc. Acad. 1852, p. 165; (Tanaops) Proc. 

 Acad. 1859, p. 74; apicalis Motsch. (Cephalistes) Bull. Mosc. 1859, iv., p. 409, pi. 

 4, fig. 28; unicolor Motsch. loc. cit. p. 410. Resembles the preceding in form 

 and sculpture and differs as follows; Epistoma in front of insertion of antenna 

 membranous. Thorax totally black, rarely with hind angles paler. Lateral 

 margin of elytra near apex only, apex and suture at apical half rufous. 

 Length .14 — .16 inch; 3.5 — 4 mm. 



Male. — Antennae more distinctly serrate. Abdomen with last two segments 

 with two rounded foveas separated in a similar manner. Body beneath and 

 legs black, anterior trochanters yellow. 



Female. — Last two abdominal segments entire, penultimate elevated along the 

 middle, anterior segments membranous at middle. 



This species is variable in the extent of the paler margining of the 

 elytra. The two species of Motschulsky are examples of this, and I 

 have but little doubt in uniting them with the species of LeConte, 

 which has but a few months' priority and was not known to Motsch- 

 ulsky. 



Occurs with the preceding species in California. 

 T. longiceps and abdominalis may always be distinguished by the 

 extent of the membranous margin of the epistoma, the former has 

 the membrane extending to the point of insertion of the antennae, so 

 that the ring in front is incomplete, while the latter has the antennal 

 insertion completely surrounded by a corneous ring although very 

 narrow in front. 



MICRO LIPUS, Lee. 



Microlipus, Lee. Proc. Acad. 1852, p. 168. 



M. laticeps, Lee. loc. cit. — Elongate, aeneous black, moderately shining, 

 finely cinereo-pubescent. Head with two frontal and one vertical impression, 

 anterior portion of epistoma membranous, yellow. Antennae black, three 

 basal joints on the under side pale yellow. Thorax broader than long, sub- 

 opaque, finely granulate and punctured, entire margin narrowly bordered with 

 yellow. Elytra slightly rugose, greenish-black tipped with yellow, and not 



