314 On Aquatic C<irnlcorous Coleoptera or Dytiscidce. 



This is the smallest species of the genus. The elytra are dark without trace of 

 irro ration or flexuous lines, and show a band near the base, and another a little 

 beyond the middle yellowish, this latter being pretty widely interrupted at the 

 suture, the apex is also pale, and there is a small pale spot on the lateral margin 

 between the two fasciae. 



I do not know the male ; and of the female I have seen but one individual (which 

 has lost its head), this has the last ventral segment truncate, and with a very slight 

 projection in the middle of the hind margin ; on each side of this it is distinctly 

 oblique, but there is no sinuation. Though the species has some resemblance of 

 colour to L. quadrimaculatus, it is much smaller, and the apical ventral segment 

 in the female is of a different shape. 



Bangkok. 593. 



1G7. Laccophilus cingulatus, n. sp. — Ovalis, subdepressus, sat latus, pernitidus, 

 testaceus, prothorace anterius et posterius in medio, abdomine pectoreque infus- 

 catis ; elytris fuscis, fascia sub-basali fere Integra pallida, colore fusco lineis valde 

 ilexuosis angustissimis diviso. Long. 3}, lat. l| m.m. 



The dark marks of the elytra in this species are so extended as to make the 

 elytia appear entirely dark, the irregular pale marks which separate the dark lines 

 being very reduced ; on the other hand the pale fascia near the base is remarkably 

 definite and conspicuous. The male has the front and middle tarsi but little incrassate, 

 the apical ventral segment is a little produced in the middle so as to be oblique, but 

 not sinuate on each side. 



Australia. 585. 



168. Laccophilus basalis, ^lotsch. M. C. — Ovalis, subdepressus, pernitidus, testa- 

 ceus, elytris fusco-suffusis, colore fusco lineis valde flexuosis diviso, et ante apicem 

 plus minusve interrupto et desinente, fascia sub-basali fere Integra pallida. 

 Long 3, lat. ll m.m. 



This species bears a great resemblance to L. cingulatus, but the thorax is 

 without dark marks, and the underside is pale, and the dark marks of the elytra 

 are not so entire on the apical portion, for besides the very conspicuous pale band 

 near the base, there is an interruption of the dark colour before the apex so as to 

 form a very broken pale band, and the dark colour does not extend quite to the 

 apex. The male has the front and middle tarsi but little incrassate, and the 

 apical ventral segment is a little produced in the middle so as to be oblique but 

 not sinuate on each side ; the female appears to me to have the apical segment 

 entire, and simply curved at the sides so as to be without sinuation, but the only 

 individual I have seen of this sex is in sucli bad condition that I cannot speak 



