Miscellaneous. 427 
Note on West-African Species of Hemirhamphus. 
By Dr. A. GUNTHER. 
I have just observed that I omitted, in my account of Hemirham- 
phus, to mention the West-African species described and figured by 
Dr. Bleeker in ‘ Poissons de la Céte de Guinée,’ Mém. Soc. Holl. 
Haarlem, 1862. 
1. The species described by him (p. 118, tab. 21. fig. 2) as H. 
vittatus (Val.), and identified with Esox brasiliensis (Brown), is most 
probably the Linnean Esowv brasiliensis (see Catal. Fish. vi. p. 270), 
but distinct from H. vittatus (Val.). 
2. Hemirhamphus guineensis, n. sp., Blkr. p. 119, tab. 25. fig. 2, 
is identical with H. vittatus (Val.), Ginth. Fish. vi. p. 269. 
3. Hemirhamphus Schlegelii, Blkr. p. 120, tab. 25. fig. 1, is a 
very distinct species, to which I have, unfortunately, given another 
name, viz. H. calabaricus (Fish. vi. p. 266). 
On the Organs of Secretion in the Hemiptera. 
By J. KiNncKEL. 
The most voluminous of the salivary glands are supported on the 
stomach, and occupy the whole upper part of the thoracic cavity, 
and extend into the abdomen. Each of them is divided into two 
parts by a constriction, and from this point the ejaculatory duct issues 
beneath. This duct divides at once into two branches, the largest 
of which runs almost directly to the head, passing beneath the 
cesophagus, where it approaches that of the opposite side. These 
ducts become fixed in a small cylindrical piece, of solid texture, and 
finally open by distinct orifices. The smaller branch descends into 
the abdomen, forming numerous sinuosities, and then ascends towards 
the head; on arriving in front of the cesophagus, being suddenly 
turned aside, it passes beneath a large coriaceous piece, which plays 
a great part in the movements of the parts of the mouth and in the 
acts of suction and deglutition. 
The glands of the second pair, concealed beneath the principal 
glands, are formed each of a simple czecal tube rolled upon itself 
and terminating at the outer angle of the coriaceous piece just men- 
tioned. 
The superior salivary apparatus contains a secreting membrane 
covered throughout with utricles of equal size. The anterior part, 
often inflated, looks as if it formed a reservoir for the hinder part, 
which is generally racemose ; but this is not the case, as the histo- 
logical constitution shows that the same functions are performed by 
both parts. The second salivary apparatus shows much analogy with 
the preceding in its structure, but its utricles are more scattered. 
The two glands of which it is formed are the seat of a special secre- 
tion, and not, as supposed by Léon Dufour, reservoirs for that of the 
superior glands. The salivary secretion, when introduced into plants, 
produced none of the effects ascribed to the attacks of Hemiptera. 
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