ADETUS. 107 
The mesosternum is plane, as in Tautoclines; but the anterior part of the prosternum 
is fitted for the reception of the head (which thus rests on the anterior haunches) much 
more completely than in Adetus validus. The two chief: characters adduced for the 
genus Tautoclines are thus proved not to go together. The elytra in A. griseicauda 
are rotundate-dilated before the apex; and the apex itself has no trace of emargination 
or truncature. 
4, Adetus scissicauda. (Tautoclines scissicauda, Tab. VIII. fig. 1.) 
Tautoclines scissicauda, Bates, Trans. Ent. Soc. 1873, p. 225’. 
Hab. Nicaragua, Chontales (Belt). 
The degree of prominence of the mesosternum having proved an unimportant character, 
this species must be considered an Adetus, with which it agrees in general form and 
facies, as also in the shape of its prosternum, the anterior part of which is hollowed 
out to receive the head in repose; the lateral angles of the cavity thus formed are 
dentiform, as in the typical species. 
5. Adetus strigulatus. 
A, scissicaude proxime affinis, at differt elytrorum apice fusco necnon mesosterno valde convexo. Cylindroideus, 
ochraceo-fuscus, thorace atro-fusco et ochraceo lineato, elytris autem plaga elongata utrinque guttu- 
lisque atrofuscis lineolisque pallidis; thorace sparsim modice punctatis; elytris lineatim punctatis, apice 
ad suturam conjunctim emarginatis; antennis dimidio apicali nigris. 
Long. 23-4 lin. 
Hab. Guatemata, near the city (Salvin), Zapote (Champion). 
6. Adetus binotatus. (Zautoclines binotata, Tab. VIII. fig. 2.) 
Tautoclines binotata, Thomson, Physis, ii. p. 155+; Bates, Trans. Ent. Soc. 1872, p. 2347. 
Hab. Muxico 1 (Boucard); Nicaragua, Chontales (Bel¢ ?). 
I can see no difference between Chontales and Mexican specimens except in the 
punctuation of the elytra, the punctures being more distinctly impressed in lines in the 
Mexican than in the Nicaraguan form. The shape of the elytra is similar in both— 
namely, elongate with the sides strictly parallel in the middle. The antenne are of 
precisely the same form as in Adetus muticus; and the prosternum is shaped out in 
front to receive the head in repose, but is more oblique and plane than in the typical 
species. 
7. Adetus subellipticus. 
A. binotato simillimus, differt tantum elytris brevioribus magis ovatis lateribus medio leviter rotundatis. Sub- 
seneo-fuscus, subnitidus, ochraceo breviter pubescens, vitta lata thoracis laterali, macula transversa 
elytrorum postmediana vittulisque macularibus obliquis duabus (altera laterali versus basin, altera curvata 
prope apicem) ochraceis; crebre punctatus, punctis elytrorum dorso lineatim digestis; elytris apice 
breviter sinuatis, angulo suturali spiniformi, exteriore obtuso haud prolongato. 
Long. 42 lin. 
Hab. GuatTEMALA, Zapote (Champion). 
p2 
